<template>
    <div>
        <el-menu default-active="1-4-1" class="el-menu-vertical-demo" @open="handleOpen" @close="handleClose"
            :collapse="isCollapse" background-color="#545c64" text-color="#fff" active-text-color="#ffd04b">
            <h3>{{ isCollapse ? '后台' : '通用后台管理系统' }}</h3>
            <el-menu-item @click="clickMenu(item)" v-for="item in noChildren" :key="item.path" :index="item.path">
                <i :class="`el-icon-${item.icon}`"></i>
                <span slot="title">{{ item.label }}</span>
            </el-menu-item>
            <el-submenu v-for="item in hasChildren" :key="item.label" :index="item.label">
                <template slot="title">
                    <i :class="`el-icon-${item.icon}`"></i>
                    <span slot="title">{{ item.label }}</span>
                </template>
                <el-menu-item-group v-for="subItem in item.children" :key="subItem.label" :index="subItem.label">
                    <el-menu-item @click="clickMenu(subItem)" :index="subItem.name">{{ subItem.label }}</el-menu-item>
                </el-menu-item-group>
            </el-submenu>

        </el-menu>

    </div>
</template>

<script>
import { mapState } from 'vuex'
export default {
    data() {
        return {
            menuData: [
                {
                    path: '/',
                    name: 'home',
                    label: '首页',
                    icon: 's-home',
                    url: 'Home/Home'
                },
                {
                    path: '/mall',
                    name: 'mall',
                    label: '商品管理',
                    icon: 'video-play',
                    url: 'MallManage/MallManage'
                },
                {
                    path: '/user',
                    name: 'user',
                    label: '用户管理',
                    icon: 'user',
                    url: 'UserManage/UserManage'
                },
                {
                    label: '其他',
                    icon: 'location',
                    children: [
                        {
                            path: '/snake',
                            name: 'snake',
                            label: '游戏模块',
                            icon: 's-flag',
                            url: 'Other/Snake'
                        },
                        {
                            path: '/music',
                            name: 'music',
                            label: '音乐模块',
                            icon: 'headset',
                            url: 'Other/Music'
                        },
                        {
                            path: '/page1',
                            name: 'page1',
                            label: '页面1',
                            icon: 'setting',
                            url: 'Other/PageOne'
                        },
                        {
                            path: '/page2',
                            name: 'page2',
                            label: '页面2',
                            icon: 'setting',
                            url: 'Other/PageTwo'
                        }
                    ]
                }
            ]
        };
    },
    methods: {
        handleOpen(key, keyPath) {
            console.log(key, keyPath);
        },
        handleClose(key, keyPath) {
            console.log(key, keyPath);
        },
        // 跳转菜单
        clickMenu(item) {
            console.log(item);
            // 与当前页面不一致时才进行跳转
            if (this.$route.path != item.path && !(this.$route.path === '/home' && (item.path === '/'))) {
                this.$router.push(item.path)
            }
            this.$store.commit('selectMenu', item)
        }
    },
    computed: {
        noChildren() {
            return this.menuData.filter(item => !item.children)
        },
        hasChildren() {
            return this.menuData.filter(item => item.children)
        },
        isCollapse() {
            return this.$store.state.tab.isCollapse
        }
    }
}
</script>

<style lang="less" scoped>
.el-menu-vertical-demo:not(.el-menu--collapse) {
    width: 200px;
    min-height: 400px;
}

.el-menu {
    height: 100vh;
    border: none;

    h3 {
        color: #fff;
        text-align: center;
        line-height: 48px;
        font-size: 16px;
        font-weight: 400;
    }
}
</style>
